Lordy, lordy, lordy, you guys really are gonna kick yourself when you realise.
As for time?
It fits some of my clues but as far as I know, time doesn't weigh anything, relativistic or otherwise.
As for gravity?
Nah, it doesn't fit all the clues but both are pretty good guesses I suppose.
Thankfully Dusty and Gadget pulled the curtains back to reveal the answer, or at least part of the answer.
The general class described is light.
As we all know [hopefully all] light is made up of electromagnetic waves that go from about 3 hz on the electromagnetic spectrum up to the highly energetic gamma rays of about 10 exahertz frequency which for the curious minded is 10 to the power 19 hertz.
Get in the way of that and you're gonna be toast.
However, this is all fine and dandy, what the hell has this gotta do with our mystery man?
Well, tucked away in that light spectrum is what we know as visible light which goes from the lower infrared up to the ultra violet.
The visible light is only an extremely small fraction of the light spectrum but within that fraction lay all the colours we can see as visible light.
Each colour can be represented by its wavelength, its frequency and its energy.
And so, the three pairs of numbers we started with merely specified the values of a particular colour within that visible spectrum.
And as I was writing this out, I received the correct answer.
Dusty and Gadget broke the back of the problem but just fell short of coming up with the eventual answer.
That accomplishment fell to Mick, RebelTackleberry.
I'll reveal all later today but in the meantime, a big fat congrats to all three guys but Reb takes the winner's medal.